Skip to main content Accessibility help
×
Home

Characterizing fish communities associated with drifting fish aggregating devices (FADs) in the Western Indian Ocean using underwater visual surveys

  • Marc Taquet (a1), Gorka Sancho (a2), Laurent Dagorn (a3), Jean-Claude Gaertner (a4), David Itano (a5), Riaz Aumeeruddy (a6), Bertrand Wendling (a6) and Christophe Peignon (a7)...

Abstract

We adapted a visual census method, mainly used in demersal and reef fish studies, to characterize fish communities associated to drifting fish aggregating devices (FADs) in the Western Indian Ocean. Drifting FAD associated fishes from both equatorial (Seychelles) and tropical waters (Reunion Island) were examined by divers. A total of 32 species (belonging to 16 families) were observed associated with drifting FADs in equatorial waters, and 24 species (14 families) were found around FADs in tropical waters. Twenty species were found in both regions. The highest number of species observed at a single FAD was 18 (12 ± 2, mean±SD) in equatorial and 13 (10 ± 3) in tropical waters, not counting circumnatant species loosely associated with the FAD. Some species like Kyphosus vaigiensis, Canthidermis maculata, Elagatis bipinnulata, Acanthocybium solandri and Coryphaena hippurus were observed on all or most of the surveys. In this study, the contribution in biomass of the 18 common species associated with drifting FADs (but excluding circumnatant species), represents more than 98% of the biomass. The overall biomass values of closely associated species remains well below tuna biomass estimates for circumnatant tuna schools at FADs, estimated as high as 200 tons. The species that most significantly contribute to the by-catch in tuna purse-seines logically match those that showing the highest biomass values in our surveys (Carcharhinus spp., Elagatis bipinnulata, Coryphaena hippurus, Canthidermis maculata, and Acanthocybium solandri). One of the most abundant and ubiquitous species in our study was the spotted oceanic triggerfish Canthidermis maculata that sometimes formed massive schools of many thousands individuals around the drifting FADs. Future research is needed to explore the role of such non tuna species in the attraction and aggregation processes of tuna around drifting FADs.

Copyright

Corresponding author

References

Hide All
[1] Andaloro F, Sinopoli M, Coen B, Potoschi A. 2002, Fish community associated with fads in southern Tyrrhenian Sea and northern Ionian Sea. Biol. Mar. Medit. 9, 236–237.
[2] Bochard R., Techer G., 2004, Écologie alimentaire des thons bananes (Acanthocybium solandri) agrégés autour des objets flottants dans le sud-ouest de l'océan Indien. Mémoire de Maîtrise de biologie des populations et des écosystèmes, Université de La Réunion.
[3] Bohnsack J. A., Bannerot, S. P., 1986, A stationary visual census technique for quantitatively assessing community structure of coral reef fishes. NOAA Tech. Rep. NMFS 41.
[4] Buckley, T.W., Miller, B.S., 1994, Feeding habits of yellowfin tuna associated with fish aggregating devices in American Samoa. Bull. Mar. Sci. 55, 445459.
[5] Castro, J.J., Santiago, J.A., Santana-Ortega, A.T., 2002, A general theory on fish aggregation to floating objects: an alternative to the meeting point hypothesis. Rev. Fish. Biol. Fish. 11, 255277.
[6] Colvocoresses, J., Acosta, A., 2007, A large-scale field comparison of strip transect and stationary point count methods for conducting length-based underwater visual surveys of reef fish populations. Fish. Res. 85, 130141.
[7] D'Anna, G., Badalamenti, F., Riggio, S., 1999a, Traditional and experimental floating fish aggregating devices in the Gulf of Castellammare (NW Sicily): Results from catches and visual observations. Sci. Mar. 63, 209218.
[8] D'Anna, G., Lipari, R., Badalamenti, F., Cuttitta, A., 1999b, Questions arising from the use of visual census in natural and artificial habitats. In: Vacchi M. (eds.), Fish Visual Census in Marine Protected Areas. Il Naturalista Siciliano 23, 187204.
[9] Dagorn, L., Holland, K.N., Itano, D.G., 2007, Behaviour of yellowfin (Thunnus albacares) and bigeye (T. obesus) tuna in a network of Fish Aggregating Devices (FADs). Mar. Biol. 151, 595606.
[10] Dempster T., 2003, Association of pelagic fish with floating structures: patterns, processes and ecological consequences. PhD Thesis, University of Sydney.
[11] Dempster, T., Kingsford, M.J., 2003, Homing of pelagic fish to fish aggregating devices (FADs): an investigation of the role of sensory cues. Mar. Ecol. Prog. Ser. 258, 213222.
[12] Dempster T., Taquet M., 2004, Analysis of the literature on fish aggregation devices (FAD) research; gaps in current knowledge and future research directions for studies of FAD-associated fish. Rev. Fish. Biol. Fish. 14, 21–42.
[13] Fabi, G., Grati, F., Lucchetti, A., Trovarelli, L., 2002, Evolution of the fish assemblage around a gas platform in the northern Adriatic Sea. ICES J. Mar. Sci. 59, 309315.
[14] Fabi, G., Grati, F., Puletti, M., Scarcella, G., 2004, Effects on fish community induced by installation of two gas platforms in the Adriatic Sea. Mar. Ecol. Prog. Ser. 273, 187197.
[15] Fonteneau A., Pallares P., Pianet R., 2000, A worldwide review of purse seine fisheries on FADs. In: Le Gall J.-Y., Cayré P., Taquet M. (eds.), Pêche thonière et dispositifs de concentration de poissons. Ed. Ifremer, Actes Colloques 28, 15–34.
[16] Freon, P., Dagorn, L., 2000, Review of fish associative behaviour: toward a generalisation of the meeting point hypothesis. Rev. Fish. Biol. Fish. 10, 183207.
[17] Graham, N., Evans, R., Russ, G., 2003, The effects of marine reserve protection on the trophic relationships of reef fishes on the Great Barrier Reef. Environ. Conserv. 30, 200208.
[18] Graham, N., McClanahan, T., Letourneur, Y., Galzin, R., 2006, Anthropogenic stressors, inter-specific competition and ENSO effects on a Mauritian coral reef. Environ. Biol. Fish. 78, 5769.
[19] Hall M., Lennert-Cody C. Garcia M., Arenas P., 1999, Characteristics of floating objects and their attractiveness for tunas. In: Scott M.D., Bayliff W. H., Lennert-Cody C.E., Schaefer K.M. (eds.), Proc. Int. Workshop on the Ecology and Fisheries for Tunas Associated with Floating Objects, February 11–13, 1992. Inter-Am. Trop. Tuna Comm. Spec. Rep. 11, La Jolla, California, pp. 396–446.
[20] Harmelin-Vivien, M., Harmelin, J.G., Chauvet, C., Duval, C., Galzin, R., Lejeune, P., Barnabé, G. Blanc, F., Chevalier, R., Duclerc, J., Lasserre, G., 1985, Evaluation visuelle des peuplements et populations de poissons : méthodes et problèmes. Rev. Ecol. (Terre-Vie) 40, 467539.
[21] Jones J., 1772, Oppian's Halieuticks of the Nature of Fishes and Fishing of the Ancients in V. Books. Translated from the Greek by J. Jones, with an account of Oppian's Life & Writings, and a Catalogue of his Fishes, Oxford.
[22] Kingsford, M., Leis, J., Shanks, A., Lindeman, K., Morgan, S., Pineda, J., 2002, Sensory environments, larval abilities and local self-recruitment. Bull. Mar. Sci. 70, 341375.
[23] Lecchini, D., Nakamura, Y., Tsuchiya, M., Galzin, R., 2007, Spatiotemporal distribution of nocturnal coral reef fish juveniles in Moorea Island, French Polynesia. Ichthyol. Res. 54, 1823.
[24] Lennert-Cody C.E., Hall M.A., 2000, The development of the purse seine fishery on drifting aggregating devices in the Eastern Pacific Ocean: 1992-1998. In: Le Gall J.-Y., Cayré P., Taquet M. (eds.), Pêche thonière et dispositifs de concentration de poissons. Ed. Ifremer, Actes de Colloques 28, 78–107.
[25] Mann, D., Casper, B., Boyle, K., Tricas, T., 2007, On the attraction of larval fishes to reef sounds. Mar. Ecol. Prog. Ser. 338, 307310.
[26] Ménard, F., Stéquert, B., Rubin, A., Herrera, M., Marchal, E., 2000, Food consumption of tuna in the Equatorial Atlantic Ocean: FAD-associated versus unassociated schools. Aquat. Living Resour. 13, 233240.
[27] Moreno, G., Dagorn, L., Sancho, G., Itano, D., 2007, Fish behaviour from fishers' knowledge: the case study of tropical tuna around drifting fish aggregating devices (DFADs). Can. J. Fish. Aquat. Sci. 64, 15171528.
[28] Morales-Nin B., Cannizzaro L., Massuti E., Potoschi A., Andaloro F., 2000, An overview of the FADs fishery in the Mediterranean Sea. In: Le Gall J.-Y., Cayré P., Taquet M. (eds.), Pêche thonière et dispositifs de concentration de poisons. Ed. Ifremer, Actes de Colloques 28, pp. 184–207.
[29] Olson, R.J., Galvan-Magana, F., 2002, Food habits and consumption rates of common dolphinfish (Coryphaena hippurus) in the eastern Pacific Ocean. Fish. Bull. 100, 279298.
[30] Oxenford, H.A., 1999, Biology of the dolphin-fish (Coryphaena hippurus) in the western central Atlantic. Sci. Mar. 63, 277301.
[31] Parin N.V., Fedoryako B.I., 1999, Pelagic fish communities around floating objects in the open ocean. In: Scott M.D., Bayliff W.H., Lennert-Cody C.E. Schaefer K.M. (eds.), Proc. Int. Workshop on the Ecology and Fisheries for Tunas Associated with Floating Objects, February 11-13, 1992. Inter-Am. Trop. Tuna Comm. Spec. Rep. 11, La Jolla, California, pp. 447–458.
[32] Rilov, G, Benayahu, Y., 2000, Fish assemblage on natural versus vertical artificial reefs: The rehabilitation perspective. Mar. Biol. 136, 931942.
[33] Romanov, E.V., 2002, By-catch in the tuna purse-seine fisheries of the Western Indian Ocean. Fish. Bull. 100, 90105.
[34] Salmon, M., Winn, H.E., Sorgente, N., 1968, Sound production and acoustical behavior in triggerfish. Pacif. Sci. 12, 1120
[35] Takahashi M., Urakawa T., Kasahara F., Kanda A., 1988, JAMARC's activities on tagging on tunas in Indian Ocean. Expert consultation on stock assessments of tunas in the Indian Ocean, Mauritius, 22-27 June 1988. IPTP Collect. Vol. Work. Doc. 3, pp. 208–223.
[36] Taquet M., 2004, Le comportement agrégatif de la dorade coryphène (Coryphaena hippurus) autour des objets flottants. Thèse de Doctorat, Université de Paris 6, Océanologie biologique.
[37] Taquet M., Diringer A., 2007, Guide des poissons de l'océan Indien et de la mer Rouge. Editions Quae, Versailles.
[38] Tessier, E., Chabanet, P., Pothin, K., Soria, M., Lasserre, G, 2005, Visual censuses of tropical fish aggregations on artificial reefs: slate versus video recording techniques. J. Exp. Mar. Biol. Ecol. 315, 1730.

Keywords

Related content

Powered by UNSILO

Characterizing fish communities associated with drifting fish aggregating devices (FADs) in the Western Indian Ocean using underwater visual surveys

  • Marc Taquet (a1), Gorka Sancho (a2), Laurent Dagorn (a3), Jean-Claude Gaertner (a4), David Itano (a5), Riaz Aumeeruddy (a6), Bertrand Wendling (a6) and Christophe Peignon (a7)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed.